Apparatus for drying glue



(No Model.) I

W. A- HOEVELER.

APPARATUS 110R DRYING GLUE, aw. No. 276,405. Patented Apr.24, 1883.

I WZ/zzssas.

n PETERS. PhokvLihognp hun waging a. c.

I UNIT D STATES PATENT OFFIcE.

WILLIAM A. HOEVELER, OF PITTSBURG, PENNSYLVANIA.

APPARATUS FOR DRYING GLUE, 80C.

SPECIFICATION forming part of Letters Patent No. 276,405, dated April24, 1883.

Application filed December 30, 1882. (N6 model.)

To all whom it may concern Be it known that I, WILLIAM A. HOEVELER, ofPittsburg, in the county of Allegheny and State of Pennsylvania, haveinvented certain new and useful Improvements in Apparatus for DryingGlue, 820.; and I do herebydeelare that the following is a full, clear,and exact description of the invention, which will enable others skilledin the art to which it appertains to make and use the same, referencebeing bad to the accompanying drawings, which form a part of thisspecification, in which- Figure 1 is a plan section, and Fig.2 a sideelevation in section, of my improved dryingalley. Fig. 3 is an end viewin section.

The object of this invention is to facilitate the drying of'glue,tankage, &c., in glue-works.

The invention consists in the combination and arrangement of devices, ashereinafter fully described and claimed.

The form and arrangement are as follows:

A B represent the two parts of the alley, separated by the partition 0,which is shorter than the alley, so as to leave acommunicating space atboth ends. I

At the front of section A, I locate a blower, D, actuated by asteam-engine or other motor, E, also located within the walls of thealley. The whole current from blower D is directed through section A ofthe alley, whence it turns into section B and comes back through it, tobe again drawn into and forced out of the blower into section A. By thismeans the contained air of the alley is set in continuous motion aroundand around through the two sections successively, and as the structureis made asair-tight as practicable in such cases the air remainsunchanged until the doors F or either of them is opened to discharge thevitiated air and let in fresh air.

In sections A and B, I place the railway a a, to admit of the convenientmovement of the contents in process of drying, which are 'generallysetongcars or buggies.

In section A, in front of blower D, I place a steam or other heatingdevice, G, which may be of any form or design adapted to allow the airfrom blowerD to pass through it and to heat such air whilepassingtherethrough. I prefer the radiating coil for such purpose, the steamentering at b and emerging at 0. At the other end of the alley, which bymy double construction is in section B just back of theblowerand'heating-coil, I place a condensing-coil, H, ofa construction similar tocoil G, and having in let (1 and outlet 0. Through this condenser I keepflowing a refrigerating liquid or brine, which renders the condenservery cold. continuous current of air from the blower passes over thecontents of the cars or trays in the alley and takes up moisture in itspassage. After such passage t he air is charged with moisture and comesin contact with the coils of the condenser H, upon which the charge ofmoisture is condensed, and the air emerges dry again, enters the blower,and is again made the vehicle by which the moisture of the glue or othercontents is transported to and deposited on the condenser.

In drying glue by this method I do not use thesteam-coil at the firststage of drying a charge, as the drying should not be effected toorapidly; but as soon as the product begins to stiffen properly I admitthe steam to coil G, and thereafter the operation is continuous, asabove described.

By doubling up the alley into two sections, as shown, I am enabled toerect the alley in a more contracted space. In a length of ninety feet Iget the benefit of a single alley one hundred and eighty feet long..Section B may, if desired, be located on top of section A. Doors may belocated wherever desired, to facilitate the movement of the trays orcars and the placing of them into and their removal from the alley.

By the above apparatus I can perfect the drying in a very much shortertime than can be done by the old alleys, and I can. operate in hotweather without hinderance from the condition of the atmosphere.

In cases where the atmosphereis dryenough to dispense with the heaterand the condenser, I can throw the doors F wide open, extend thepartition C out to that end of the alley, and

The i then preserve a continuous forced draft of sufficiently dry air inboth alleys for the purpose. As there are many days during the year fineenough to give reasonably dry air, I can operate with the blower alonein this way, and thus economize the steam and the refrigerating brine.

3. The drying apparatus consisting of the alleys A B, blower l),heating-coil G, and con- 15 'densingcoil H, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

WILLIAM A HOEVELER.

Witnesses T. J. MCTIGHE, THOMAS J. PATTERSON.

